Magnetic head for perpendicular magnetic recording having a write shield
US8867168B2 · kind B2 · utility
6Cited by
10References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2012 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Dec 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/315
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head includes a main pole, a write shield, and a return path section. The write shield includes first and second shield portions located on opposite sides of the main pole in the track width direction. The return path section includes first and second yoke portions located on opposite sides of the main pole in the track width direction. The first yoke portion is connected to the first shield portion. The second yoke portion is connected to the second shield portion. A coil surrounds at least part of the entire outer periphery of the main pole when viewed from a medium facing surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.